Questions on Algebra: Sequences of numbers, series and how to sum them answered by real tutors!

Tutors Answer Your Questions about Sequences-and-series (FREE)

Question 1202785: Justin recently started working for a company that pays him $11.40 per hour. He is expected to work a total of 251 days for 8 hours each.
How much will Justin earn for the year (i.e. gross annual salary)?
Click here to see answer by josgarithmetic(39620)

Question 1202808: -7,-7,-7/10,-7/80,-7/80,-7/800
What is the next term in this sequence?
Click here to see answer by ikleyn(52800)

Question 1202818: What is the explicit formula for the geometric series -1, -1/3, -1/9, -1/27,...
The answer key states the common ration is -1/3. This doesn't make sense to me. My answer was 1/3.
Click here to see answer by ikleyn(52800)

Question 1202933: What number could be on the question mark?
75,634, 48,192, ?, 7,320, 1,460
Click here to see answer by josgarithmetic(39620)

Question 1202987: The nth term of a sequence is n²-n-2. Find the first 4 terms and the term which equals 208.
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Question 1203073: What are the next 7 numbers? 26, 46, 35, 42, 28, 9, 4,

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Question 1203073: What are the next 7 numbers? 26, 46, 35, 42, 28, 9, 4,

Click here to see answer by ikleyn(52800)

Question 1203186: 6x7^n - 2x3^n habis dibagi 4 untuk setiap n bilangan asli.
keterangan : ^n = pangkat n
Click here to see answer by math_tutor2020(3817)

Question 1203186: 6x7^n - 2x3^n habis dibagi 4 untuk setiap n bilangan asli.
keterangan : ^n = pangkat n
Click here to see answer by ikleyn(52800)

Question 1203220: What is the sequence for -1, 3 , -5
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Question 1203220: What is the sequence for -1, 3 , -5
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Question 1203220: What is the sequence for -1, 3 , -5
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Question 1203220: What is the sequence for -1, 3 , -5
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Question 1203253: Select the option for ? That continues the pattern
3,5,12,55,648,?
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Question 1203253: Select the option for ? That continues the pattern
3,5,12,55,648,?
Click here to see answer by ikleyn(52800)

Question 1203321: 1/2,3/4,1,5/4,3/2
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Question 1203321: 1/2,3/4,1,5/4,3/2
Click here to see answer by greenestamps(13200)

Question 1203357: If nth term of a sequence is denoted by 3n(2n-1) find the sum of the first 5 term

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Question 1203380: The population of a village at the end of consecutive decades was 2173, 2281, 2395, 2514. Show that the population was increasing approximately in G.P.
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Question 1203382: 3 uknowns using elimination method examples
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Question 1203382: 3 uknowns using elimination method examples
Click here to see answer by ikleyn(52800)

Question 1203394: 1.1, -2.2, 3.3, -4.4,...
Simplification.
Formula: sub an=ar(n-1)
(Geometric sequence simplify)
Click here to see answer by ikleyn(52800)

Question 1203394: 1.1, -2.2, 3.3, -4.4,...
Simplification.
Formula: sub an=ar(n-1)
(Geometric sequence simplify)
Click here to see answer by math_tutor2020(3817)

Question 1203500: What is the general term of -1,2,-4,8,-16
Click here to see answer by Theo(13342)

Question 1203500: What is the general term of -1,2,-4,8,-16
Click here to see answer by MathLover1(20850)

Question 1203500: What is the general term of -1,2,-4,8,-16
Click here to see answer by Edwin McCravy(20059)

Question 1203519: 101rd term of the arithmetic sequence if a1=-5 and d=-4
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Question 1203519: 101rd term of the arithmetic sequence if a1=-5 and d=-4
Click here to see answer by ikleyn(52800)

Question 1203520: 101rd term of the arithmetic sequence if a1=-5 and d=-4
Click here to see answer by mccravyedwin(407)

Question 1203542: The first term of an AP is 7 and the sum of the first 40 terms is 1216.
find the nth term and 20th term
Click here to see answer by ikleyn(52800)

Question 1203542: The first term of an AP is 7 and the sum of the first 40 terms is 1216.
find the nth term and 20th term
Click here to see answer by josgarithmetic(39620)

Question 1203542: The first term of an AP is 7 and the sum of the first 40 terms is 1216.
find the nth term and 20th term
Click here to see answer by Theo(13342)

Question 1203589: What is the arithmetic mean between -2 and 58?
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Question 1203589: What is the arithmetic mean between -2 and 58?
Click here to see answer by greenestamps(13200)

Question 1203589: What is the arithmetic mean between -2 and 58?
Click here to see answer by ikleyn(52800)

Question 1203621: What is the 7th term of the series 12, 6, 18,...
Click here to see answer by josgarithmetic(39620)

Question 1203621: What is the 7th term of the series 12, 6, 18,...
Click here to see answer by greenestamps(13200)

Question 1203621: What is the 7th term of the series 12, 6, 18,...
Click here to see answer by ikleyn(52800)

Question 1203626: Solve the problem.
underbrace(5 + 8 + 11 + 14 + . . . + 299 + 302) =
100 terms
Click here to see answer by mananth(16946)

Question 1203626: Solve the problem.
underbrace(5 + 8 + 11 + 14 + . . . + 299 + 302) =
100 terms
Click here to see answer by greenestamps(13200)

Question 1203768: if f(1)=5 f(n)=4f(n-1)+1 then what is the value of f(3)

Click here to see answer by MathLover1(20850)

Question 1203795: the second term of an arithmetic is 12 and the 6th term is 40. What is the common difference?
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Question 1203795: the second term of an arithmetic is 12 and the 6th term is 40. What is the common difference?
Click here to see answer by ikleyn(52800)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790